Pump.



A. J. ROSS & M. J. MORTON.

PUMP.

APPLICATION FILED MAR. a, 1906.

2 SHEETS-SHEET 1-.

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PATBNTED OCT. 22, 190?.

INVENTORS.

No. 868,703. PATENTED OGT. 22, 1907. A. J. ROSS & M. J. MORTON.

PUMP.

APPLIOAT'ION FILED MAR. a. 1906.

2 SHEETS-SHEET 2.

Attorneys,

.Znt AOIRI! PETERS ca, WASNINGYON, c.

UNITED STATES PATENT OFFICE.

ANDI-t EW J'. ROSS AND MARSHALL J. MORTON, OF PIONEER, CALIFORNIA; SAIDMORTON ASSIGNOR TO SAID ROSS.

PUMP.

Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed March 3,1906. Serial No. 304,120.

To all whom it may concern:

lie it known that we, Annnnw J. Ross and MAR- SHALL J. MoirroN, citizensof the United States of America, and residents of Pioneer, county ofKern, State 01' California, have invented certain new and usefulImprovements in Pumps, 01' which the following is a full and clearspecification, reference being had to the accompanying drawings, inwhich Figure I is a side elevation showing the outlet pipe in crosssection; Fig 2 is a plan view partly in section, the section being takenon the line 22 of Fig. 1; Fig. 1% a vertical longitudinal section,partly in side elevation; Fig. 4 a vertical section on the line aa ofFig. 2, parts of the pump cylinders being broken away to show thepositions oi the two pistons; Fig. 5 is a ver tical section on the linebb 01' Fig. 2; Fig. (i a view similar to Fig. l but showing thecylinders and the ports in their opposite position; Fig. 7 a viewsimilar to Fig. 5 but with the ports in their opposite position; Figv 8a vertical transverse section on the line 8-8 oi Fig. 3; and Fig. 9 aview similar to Fig. 6 showing the construction more in detail.

The object o'l this invention is to provide a simple and powerfulapparatus which will furnish a large and continuous stream of water at ahigh pressure, as more fully hereinafter set forth.

To the acconiplislinient of this object and such others as mayhereinafter appear, the invention consists of the parts and combinationof parts hereinafter iully described and particularly pointed out in theappended claims, reference being had to the accompanying drawingsforming a part of this specification, in which the same referencechantcters designate like parts throughout the several views.

Rel'errin g to the drawings annexed by referencechara'cters, the lettersA and B designate two pump cylinders constituting the pump barrel andconnected to gcthcr at their inner ends by a transverse cylindricalchamber C which extends laterally from the pump cylinders and formsoppositely projecting hollow trun nions lettered respectively 0 and (1whose end walls are closed by screw heads. Vertically across the chamberC is arranged an inipcrforate partition c, the ends of this partitionextending to the end walls of the trunnion chambers, thereby not onlydividing said chamber into two parts but also separating the two pumpcylind ers from each other. The trunnion chambers are closed except forthe provision of two pairs of ports a and c, the ports (1 serving asinlet ports and the two on the other side serving as outlet ports, orvice versa. The ports of each pair are arranged on opposite sides of thepartition c The hollow trunnions [it and Work in cylindrical bearings.l'ormed in the upper ends of the supporting pedestals ll and I) boltedto base G by bolts g. These cup or cylindrical shaped bearings are eachclosed by a solid wall at its outer side but in its under side eachcylindrical bearing is provided with a pair of ports adapted to registerwith the ports in the under side of the hollow trunnions. 'lhe ports inthe pedestal E are ltllltl'Gd e and the ports in the pedestal D arelettered d and these ports communicate respectively with chambers 0 and(1 formed in the pedestals, and the chamber 0 communicates with theoutlet pipe 0 while the other chamber (1 communicates with the inletpipe d.

In the cylinder A works the pistons P and in the other cylinder works acompanion plunger P, and these two plungers are connected rigidlytogether by the long rods p and the cross-bars p and p Attached to oneof the cross-bars p is a bearing 19 and connected to this bearing is thewrist-pin of a crank arm F carried by the shaft oi the belt pulley Wwhich is adapted to be driven by any suitable power.

In operation the rotation of the crank F not only oscillates the pumpbarrel on its hollow trunnions but simultaneously reciprocates theplungers alternately in opposite directions. As the plungers,alternately reciprocate in opposite directions they alternately draw inand force out the liquid, the ingress taking place at one side of thepump and the egress taking place at the opposite side, the ports beingso arranged that one pair of inlet ports will always be open and onepair of outlet ports will be discharging, thus providing for acontinuous stream of water. i

The arrangement of the hollow trunnions permits ports of ample capacityto be employed thereby insuring not only a continuous supply of waterbut also a large volume. By the employment of the central partition andthe ports at the sides of the pump, it will be observed that theplungers are permitted to work close up to the center of the pump,thereby obtaining the greatest capacity possible with a given length ofpump barrel. It will be observed also that the construction isexceedingly simple and durable, there being no valves, in the truesense, employed; and it will be iurthcr observed that wear will bereduced to a minimum and that even when it takes place to a considerabledegree there will be little or no leakage in view of the employment ofthe closed-ended trunnions and closed-ended bearing cups and the furtherfact that the trunnions continually wear their own seats in thesupporting cylinders.

As shown in Fig. 9, a series of rollers Z may be interposed between theupper side of each trunnion and a wear plate L supported in the bearing,for the purpose of relieving friction, these being especially desirablesince when the pump is working under heavy pressure there is a strongtendency for it to rise in its bearings and thus cause leakage at thevalve seats. The bearing plate L is preferably fitted into an upwardenlargement or bulge d formed in the upper side of the bearing, and itis rendered adjustable by means of a set-screw N, by means of which thebearing plate may be kept pressed down on the rollers to maintain atight joint at the valve seat. As also shown in Fig. 9, the valve seatsmay be provided with linings of suitable hard metal, one lining, J,being attached to the trunnion and the other lining, H, being attachedto the bearing. Horizontal ribs (1 are formed in each bearing to holdthe lining H in place and to assist in forming a dead space around theupper hall of the trunnion. The linings are of course provided withports corresponding with the ports in the trunnions and the bearings, aseries of" ports being shown in Fig. 9 on each side of the partition 0'instead of single ports as shown in the other ligures, the ports in thelining J being designated by j and the ports in lining H beingdesignated by h.

It will be apparent to those skilled in the art that various mechanicalembodiments of the invention are possible and we, therefore, do not wishto be limited to theexactlarrangement and construction shown.

What we claim and desire to secure by Letters Patent is 1. Incombination, a pair of pump cylinders connected together at their innerends by a chamber and open at their outer ends, this chamber havinglateral supporting parts and provided with a central impert'oratepartition extending across the chamber, thereby dividing the chamberinto two parts and also separating the pump cylinders from each other,ports leading into the chamber at opposite sides of the pump andopposite sides of the partition, means for supporting; these lateralparts, this supporting means bcingprovided with ports adapted toalternately register with the ports aforesaid, a plunger working in eachcylinder, means connecting the plunger-s, and power driven means foractuating the plungers and oscillating the pump barrel.

2. In combination, a pair of pump cylinders connected together at theirinner ends by a chamber, this chamber having lateral cylindrical hollowtrunnions whose outer ends are closed and whose under sides are eachprovided with a pair of ports, a vertical imperforate partitionextending across the chamber between said ports, thereby dividing thechamber into two parts and also separating the pump cylinders from eachother a stationary cup-like cyliudrical bearing adapted to embrace andcover the end of each trunnion, the under side of this hearing beingprovided with ports, inlet and outlet chambers connected with theselatter ports, connected plungcrs working in the cylinders, and suitableoperating means.

3. In combination, a pair of pump cylinders connected together at theirinner ends by a chamber, this chamber having lateral cylindrical hollowtrunnions whose outer ends are closed and whose under sides are eachprovided with a pair of ports, a vertical imperlorate partition extending across the chamber between said ports, thereby dividing thechamber into two parts and also separating the two pump cylinders fromeach other a stationary cylin drical cup-like bearing adapted to embraceand cover the end of each trunnion, the under side of this bearing beingprovided with ports, a series of rollers between the upper side of eachtrunnion and the top of the cylindrical bearing, and means for exertinga pressure downward on these rollers, inlet and outlet chambersconnected with these latter ports, connected plungers working in thecylinders, and suitable operating means.

4. In a pump of the type set forth, a pair of pump cylindcrs connectedtogether at their inner ends and having lateral hollow trunnions,connected pistons working in the cylinders and means for simultaneouslyoperating these pistons in opposite directions and oscillating thecylinders on said hollow trunnions, inlet and exhaust ports in the undersides of said hollow trunnions, an imperforate partition extendingacross the hollow trunnions between the ports, stationary cylindricalbearings embracing said hollow trunnions and provided with ports adaptedto register with the ports in the trunnions, and adjustable hntifrictionpressure devices between the upper sides of the trunnions and the uppersides of the inclosiug bearings, whereby the trunnions are adjustablyheld down to their seats in the lower sides of the stationary bearings,for the purposes set forth.

In testimony whereof we hereunto aflix our signatures in the presence oftwo witnesses this 24 day of February 1006.

ANDREW .T. ROSS. MARSHALL J. MORTON. Witnesses L. A. Ross, C. A. HOME.

